Oven door



Dec. 9, 1924- 1,519,057

c. v. ROBERTS OVEN DOOR Filed June 29, 1923 2 Sheets-Shet 1 c. VJROBERTSDec. 9, 1924. 1,519,057

OVEN DOOR Filed June '29, 1925 2 Sheets-Sheetfi g Z16 .555077265/1" //VW yflm CLARENCE V. ROBE-EI'S, IPEi'ILiDZELP & MANIDER STOVE GGMPAZKTY,OF Pr ii,-

TION OF PENNSYLVANIA.

OVEN

.Application filed June 28,

To all whom it may concern.-

Be it known that I. C nnamon V. :R-OBERIS, a citizen of the UnitedStates, residing in Philadelphia, lhmnsylvania, have invented certainimprove .nits in (Even lJ'oors, of which the following is aspecification.

This ii'iventimi relates to certain improvements in doors used on theovens of gas and coal ranges, in which sheets of glass, or the like, aremounted. The invention is especially adapted to oven doors, in which athermometer is mounted and in which two sheets of glass are used.

One object of the invention is to use sheets of glass similar in sl apeon both sides of the oven door.

A further object of the invention is to design the frame, in which theglass mounted, so that special sheet of glass can be located on eitherside of the frame and securely held in place.

In the accompanying drawings:

Fig. 1 is a detached front view of an oven door, illustrating myinvention;

Fig. 2 is a rear View of the oven door;

Fig. 3 is a rear view of the oven door with the back plate removed andthe glass broken away to show the grooves in the frame;

Fig. l is a sectional view on the line H, Fig. 1;

Fig. 5 is a sectional View on the line 55, Fig. 1;

Fig. 6 is 6- 6, Fig. 1;

Fig. 7 1s an enlarged sectional view on the line 77, Fig. 1; and

Fig. 8 is a detached perspective view of one of the sheets of glass.

Referring to the drawings, 1 is the main frame of the oven door, havinghinge pintles 22 and a. handle 3 by which the door is opened and closed.Mounted in the main frame is an inner frame 4, having a flange 5, whichrests against the back of the main frame. The body portion of the innerframe projects from the main frame. In the present instance, the outersurface of the inner frame is flush with the outer surface of the mainframe. In some instances, the inner frame may be made integral with themain frame.

6 designates a thermometer in an opening T in the inner frame. Thethermometer, in the present instance, is attached to a back a sectionalview on the line l @FFZ C E.

YLV..NIA, ASSIGNOR TO ROBERTS EA, EENHE'SYLVANIA, A CORPORA- mild DOOR.

1923. serial N's. erases.

frame 8. Screws 9 secure the parts to the main frame. The inner framehas two openings l0 and 11. The rear frame has corresponding openings 12and 13, Figs. 2 and (in referring to the drawings, it will be noted thatthe openings in the frame are of odd shapes. The shape of the opening onone side is similar to the shape of the opening on the other side, onlyreversed. Heretofore, it was necessary to use glass made in two separatemolds. One of the features of this invention is to use a single mold.The glass fits the opening in one side, and, when reversed, it fits theopen :ing at the other side of the oven door.

The sheet of glass 14 is made as shown in Fig. 8, and has a recess 25 tofit around the thermometer, and is provided with a wide flange 15, whichprojects on one side only. 9n the opposite side is a groove 16, asclearly shown in Fig. 7.

Surrounding the opening 10 of the inner frame is a wide channel 17, inwhich is located the flange 15 of the glass 14:. Between the flange 15and the bottom of the channel is an asbestos packing 18. Surrounding theopening 11 in the inner frame is a narrow channel 19, against whichrests the body of the sheet of glass, as clearly shown in Fig. 7. In thechannel is an asbestos packing 20.

l/Vhen the two sheets of glass are in place, the back plate 8 is securedin position and the flanges 21 of the back plate rest against thesurfaces of the glass, as clearly shown in Fig. '2', holding the sheetsof glass to their seats.

It will be seen by the above construction, that a single sheet of glasscan be used to fit the opening on either side of the oven door, whichobviates the necessity of carrying glass of more than one size and shapein stock. It also eliminates errors in ordering new sheets of glass, asit is unnecessary to state whether a right hand sheet or a left handsheet is required.

In pressing sheets of glass, the flange 15 is desirable so that thesheet will hold its shape. The groove 16 back of the flange is providedso that the sheet will be substantially the same thickness throughout.

I claim:

1. The combination of an oven door having two openings, a pair of sheetsof pressed glass each shaped to riteither opening and having a marginalflange at one side and means for clamping one of said glass sheets inone position in one of said openings and the other sheet in reversedposition in the other opening.

2. The combination of an oven door having an opening at each side of thecenter and an opening for a thermometer at the center the side openingsbeing shaped to conform to the shape of the thermometer openin andsheets ot glass shaped to it the openings on each. side of the center ofthe oven door each sheet having a wide flange at one side and a grooveat he opposite side, the frame of the oven door being shaped so that theflanged side of the sheet of glass will fit the opening in one side ofthe oven door and the grooved side will fit the opening in the oppositeside thereof.

3. The combination in an oven door, of a main frame; an inner framemounted on the main frame and having an opening at or near the centerfor a tlieri'noineter, or other device, said inner hnne also having twoopenings one at each side of the center shaped to conform to the openingfor the thermometer, the inner frame having a wide channel surroundingone opening and a narrow channel surrounding the other opening; sheetsof glass fitting the openings, each sheet of glass having a wide flangeat one side and a groove at the opposite side, the flanged side of theglass fitting in the wide channel and the grooved side fitting in thenarrow channel; packing in the channels; a rear plate having openingscorresponding to the openings in the inner frame; and means for securingthe parts together.

at. A sheet of glass tor an oven door having a wide flange surroundingthe edge thereof and projecting at one side and having a groove back ofthe flange at the opposite side of the sheet and proportioii'ied to theflange whereby the sheet is of uniform thici'rness throughrmt.

A sheet of glass for oven doors having a fiat body and a recess alongone edge, and having a continuous marginal flange of broad flat form atone side and a continuous marginal groove at its opposite sideproportioned to the flange whereby the sheet is of uniform thicknessthroughout.

CLARENCE V. ROBERTS.

